https://medium.com/@MissMercedes/the-birth-of-mercedes-cb41d...
The Munich bus-trailer in action: https://www.youtube.com/watch?v=4IUE-yA8R1A
I guessed wrong. I still like my idea, but their solution is simpler and probably more efficient and more durable too.
Edit: The article has a video of this effect near the bottom.
I find it a bit freaky to be honest but you do get used to it.
Certainly not in London where they were famously banned in 2009.
Now days they’re uncommon throughout the UK, with UK cities having a preference for double-deckers. You do see them in use as shuttles at some UK airports, though.
In addition to the other reply's issues, they replaced the dirty and stinking but British-made old Routemaster buses, they were much more accessible to the disabled and babies (pushchairs), they were used successfully elsewhere in Europe, and they use more road space which could otherwise contain an important person's car.
I think they're still used in cities outside London, but that's OK since Daily Telegraph journalists never go there.
Edit: wait, I know one in Germany as well. It's expensive but between Frankfurt airport and another major city, there is a rail line but somehow the bus is significantly faster and they're using double deckers. The front row at the top was, n=3, always free for me (all four seats) so you get a quite unique experience, at least so far as my bus experiences in mainland western Europe go :)
Often true. OTOH, the reduced footprint (vs. either 1 articulated or 2 normal busses) can speeds things up, especially on cramped and congested city streets. And if you're getting near gridlock-level congestion, the length of the articulated busses can be like dumping gravel into your system's gearbox.
cant they just put another entry door?
My local transit agency just stopped allowing rear door boarding, and that was one of the main reasons: https://waypointblog.com/capmetro-is-ending-rear-door-boardi...
People want to get to work on time after all. Entering and leaving the tram or bus through all door is a simple way to improve public transports reliability.
> need a large harmonica to deal
I'd guess you mean "large accordion". Either way, the size & complexity of that joint section may be why the idea never went anywhere.